Hook Type Shot Blasting Cleaning Machine (HLT37 Series Single/Double Hook Suspension Blasting Equipment)

This hook type shot blasting cleaning machine is a versatile blasting system that uses suspended hooks to carry workpieces automatically into the blast chamber for surface treatment. The core working principle is: workpieces are suspended from hooks via electric hoists and conveyed along rails into the blast chamber. Once inside the chamber, the hook rotation mechanism rotates the workpiece at a constant speed; simultaneously, the shot blasting wheel projects high-speed rotating shots by centrifugal force, forming a dense stream that randomly impacts the rotating workpiece surfaces. Through the impact and cutting action of the shots, the hook type shot blasting cleaning machine effectively removes adhered sand, oxide scale, rust, welding slag, and contaminants. For double-hook models, one hook is being blasted inside the chamber while the other is being loaded/unloaded outside in an alternating work pattern, enabling continuous operation that significantly reduces auxiliary time and improves productivity. Through primary impact and secondary rebound of the shots, this hook type shot blasting cleaning machine achieves uniform coverage, delivering ideal cleaning results while ensuring workpieces do not deform.

In terms of manufacturing quality and structural integrity, the blast chamber of this hook type shot blasting cleaning machine features a box-type structure welded from structural steel and high-quality steel plates, offering high strength, good rigidity, and stable vibration-free operation. The hot zone liners in the blast chamber are made of high-chromium manganese steel or ZGMn13 high-manganese steel, providing excellent wear resistance and impact strength. The shot blasting wheel is an advanced cantilever centrifugal type with large shot flow, high projection speed, and high market penetration. The selection and arrangement of blasting wheels are determined through computer 3D dynamic projection simulation, ensuring uniform shot coverage and high utilization. The separator is a full-curtain type with high separation efficiency for shots, slag, and dust. The dust collection system is equipped with high-efficiency pulse-jet reverse blow filters or Venturi wet scrubbers, fully meeting modern environmental protection requirements. The hook system features three functions: self-lifting, traveling, and in-chamber rotation. The equipment can be designed with a pitless structure, making installation easy and significantly reducing foundation investment costs. The control system can be PLC-based with fault detection, ensuring stable and reliable operation.

The performance advantages and application value of this hook type shot blasting cleaning machine are substantial. First, high cleaning efficiency – the large-shot-flow, high-projection-speed blasting wheels deliver fast cleaning with excellent quality, with a single-hook cleaning cycle typically taking only 5-7 minutes. Second, strong adaptability – there are no special requirements for workpiece shape or structure, making it suitable for multi-variety, small-to-medium batch surface cleaning. Third, high automation – the hook provides self-lifting, traveling, and in-chamber rotation, with PLC control enabling automatic operation that significantly reduces labor intensity. Fourth, compact structure – the pitless designoccupies minimal floor space, is easy to install, and has low investment costs. Fifth, superior cleaning quality – uniform shot coverage leaves workpieces with a clean, bright surface, achieving Sa2.5 rust removal quality standards. Sixth, multi-purpose – suitable for both surface cleaning/derusting and shot peening strengthening, eliminating internal stress and improving fatigue strength and service life.

In terms of application scope, this hook type shot blasting cleaning machine is widely used in machinery manufacturing, construction machinery, mining machinery, pressure vessels, automotive, shipbuilding, foundry, construction, chemical, electric motor, and machine tool industries. Typical workpieces include various castings, forgings, welded parts, heat-treated parts, aluminum alloy castings, and steel structural parts. It is particularly suitable for multi-variety, small-to-medium batch surface cleaning or strengthening, as well as for cleaning slender parts and complex-shaped workpieces that are not suitable for collision. As hook load capacity increases, this equipment can also replace trolley-type cleaners for large workpieces. Through shot blasting cleaning, not only can surface rust, oxide scale, casting sand, and welding slag be removed, but welding stress can also be eliminated, coating adhesion improved, and surface quality and anti-corrosion effectiveness enhanced. It is an indispensable surface treatment solution for the foundry, forging, and machining industries.